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The following events in the history of psychology took place in 1939.
- Frustration and Aggression by Neal Miller and John Dollard
- David Wechsler publishes the Wechsler-Bellevue Intelligence Test
- Starke R. Hathaway and J. C. McKinley publish the Minnesota Multiphasic Personality Inventory (MMPI)
- September 23, Sigmund Freud
1934 - 1935 - 1936 - 1937 - 1938 - 1939 - 1940 - 1941 1942 - 1943 - 1944